Adapter from 9 V battery (Krona) to Jack DC 2.1-5.5 mm, wire length 10 cm. Review

The adapter is a contact pad for a 9 V battery (Krona) at one end of the wire, and a DC 2.1-5.5 mm jack power plug at the other. The DC 2.1-5.5 mm jack connector is often used in measuring equipment, various amateur radio developments, as well as in power supplies for household appliances. This adapter allows you to provide power to a device with a DC 2.1-5.5 mm jack. from 9 V batteries (crowns). With the help of such an adapter, it is easy and simple to realize the portability of the end device, as well as provide it with a stable power supply. The length of the wire is 10 cm, the cross section of the core is 0.3 square meters. mm, outer diameter of insulation - 1.2 mm.